Mounting of fan units in ventilating shafts



June 28, 1949. "r. WYLIE MOUNTING OF FAN UNITS IN VENTILATING SHAFTS 2Sheets-Sheet 1 Filed 001;. 21, 1946 Inventor Arrorhey Fizz-7,2

III.

June28, 1949. T. WYLIE 2,474,611

MOUNTING OF FAN UNITS IN VENTILATING SHAFTS Z 548% v Attorney PatentedJune 28, 1949 MQUNTINGALUNITS IN VENTILATING SHAFTS f";

Thomas li ;,Twiekenham;:Engiaiifl Applicatiomflctober'21; 1946,-aSerialN01. 104M81 In :Great Britain April T23,x- ;191&gp

6 Claim-S. ,(Cl. 230%;4 2) I This .invention.,irelates; to ventilatingsystems. and. more "particularly but- ;notexclusively-to the mounting.of :ventilating ,fan, units tin ventilating,

shaftsiontmarine ,ivesselsa It is anmobjecttoftheihvention to provideant improved ventilating, system-- ,whereby .a ventilat-= ing fan unitmountediin a ventilating shaftmaybe rendered morelreadilylaceessible,forrepairsor otherwise, thanshas; hitherto beenlther case. t lt is afurther object of then-invention to provider an improved ventilatingsystem, wherein the position e l of the ,ventilating fan may be readilyreversed to "reverse the direotionwf air flow" produced by thefaneAccording tp-theimention there is provided a ventilatingsystemn,eomprisingta ventilating I; shaft containing ventilating;fantunit wherein, a theulfaniunitis carriedbyl-a portion-"of said shaft;Which is pivotallymounted between theadjac ent.-

portions thereofeabout a central transverse axis so that saidintermediate portion may be turned out of linewith-spaidgadiauentzportions to render the fan unit accessible, andturned through,180.?u to *reve-rse the-direction "of airfiowsproducedpby the fan if desired.

The invention is illustrated by wayef example in the accompanyingdrawings, in which- Figure "1 is a part sectional side elevationiof aventilating. system comprisingya ventilating fan unit-andwaventilatingshaft according to the invention;

FigureZ is a sectional plan viewjtakenionfthea linei2 2 of Figure 1;

Figure-3 is a sectional sideelevation taken at right angles toFiguneljl; ShOWiEDgith intermediate p rti f the ve i at ngtshaft-din twodifferent positions; and

Figure 4 is a perspective view' of a ships ventilator incorporating aventilating system according to the invention.

In the particular construction shown in the drawings, a verticalventilating shaft generally indicated at I0 which may be of circularcross section, is formed in three portions, an upper portion I I, anintermediate or middle portion I2 and a lower portion I3. The middleportion [2 is pivotally mounted between the upper and lower portions IIand I3 respectively so that the said middle portion may be turned out ofits normal vertical position, in which itis in line with the upper andlower portions, into a position in which it is at right angles to saidupper and lower portions.

The middle portion l2 of the ventilating shaft I0 is mounted so that itcan be pivoted as indieach sideLnlateil-A X1 eachgpin; 21 tieing bolte 2as A4,-

tedabove, tbytmeausiinelusiins' two rectan ular side plates tl game l 5iizvhichsare of somewhat. ereaterheie t tha itheie ietkrof themiddle Ptioniof 1tha.shattandial'etSp cedapart in parallel, relationship atadista ice somewhat erea rr thenoutside Qdiarhetemof saidturhiddleportion of the shaitiit'lhe iupper; and lgwzer endsof theside i plates!tareaconneqiiedthyhgt ntrallylapertured top and. ibottomaplatesfllfiand-,1] respectively, the upper and lower portionspithe;shaft.,proj.ecting respectively thnougn thei apertures inisaidtplat'es l La dfill and,;beine,useq.uned.thereimin sp crelationship;forexamplenby Weldin or l y-m The middleiportioneli .ofithlventilatin shaft which is slightly'shorter in length than the dis-itance between the upper and lower portions all andi 1.3 iespectiyely gfthe-shaft .iS 'pivotally tweeniithe idfiinlatle p rtiomlotheiyeritilatin en atedfl r; v. i ventilating shaft= of t e idd etortiportions ll and"l3 respectively of said shaft are normally each closedby a sealing band generally indicated at 2'! comprising twosemi-cylindrical parts 28 and 29 with outwardly projecting end lugs 30and 3| adapted to receive a fastening bolt 32. For this purpose thefastening bolt 32 may be pivoted to one end lug 3| of each pair ofadjacent lugs, the other lug 30 of each pair being slotted forcooperation with said bolt 32 when the latter is in a substantiallytangential position with respect to the sealing band 21, the bolt beingsecured in this position by means of a nut 33. The bands 21 may belocated in position by pads IS on the shaft In as shown.

The ventilating fan unit may comprise a ventilating fan 34 and anelectric motor 35 for rotating the fan, the motor casing having supl4andyliitrorthis purpose i. is nroyidedwith a: hollow flaneedit srumiiiior stut.islnaftieem:mli iindir l a ed-ia e 1 iw i li ;hie;ctsi"inwacdl throughia centra apertu ein theinlate'towardsithamiddley haftJtheJfianeeJZ oniu. iptherwiselsecuredto dleibrtioh J2 of the,

s bstantiallyihalf. LA yb tween s e ds w tha ,airzof .externaLdia-i a"trunnion's 13 Ilwhich a prov ed with*ann l r-tb aringsy .carriedlby h na dly: b q-i et n'eizends o the a ove. men- .l tfil's de lates may; benforced mana erial. rlbs'jfi il iieletirigiin a c.en-, i b h 1. i m in mlly surrounds the .;cor-, respo d n iu trum a2" 4' Thereapsy tween thJupi er. yandglowen ends of the ,entilatingshaft, th lasentte dste:thehunnehandlowon porting arms l9 by which it is secured to say threeequidistantly spaced supporting lugs 36 arranged around the interior ofthe middle portion of the ventilating shaft, thefanbeingdisposed beneaththe motor. The electric leads (not shown) to the motor 35 from aterminal plug 31 bolted to the plate It may pass through one of thehollow fulcrum pins 2| of the trunnion. bearings 23 previously referredto, the middle portion of the ventilating shaft being provided with anappropriate aperture on the axis of the trunnion.

From the foregoing description it will be seen that in order to renderthe fan unit accessible, it is only necessary to remove the sealingbands 21 and rotate the middle portion I! of the ventilating shaft ill,with the fan unit therein, out of line with the adjacent portions H and13 of said shaft. Thus it will be seen that where. for example the upperportion ll of the ventilating shaft carries a heavy cowl 38 above aships deck 39 as shown in Figure 4, the above procedure is considerablysimpler than removing said cowl or entering the ventilating shaft toreach the fan as has hitherto been the practice."

It is to be understood that the invention is not limited to theparticular construction described above. For example the ventilatingshaft may be other than circular in cross section and other thanvertical in position.

As previously indicated the middle portion 12 of the ventilating shaft lmay be turned through 180 about its pivotal axis if desired to reversethe position of the fan and consequently reverse the direction of theair flow produced by the fan.

What I claim is:

1. A ventilating system including a ventilating shaft comprising anintermediate portion and adjacent portions two side plates connected byapertured top and bottom plates within which the adjacent portions ofthe shaft are secured, a stud shaft projecting inwardly from each sideplate towards the intermediate portion of the ventilating shaft, anddiagonal ribs on each side plate meeting in a central bush surroundingthe corresponding ,stud Shaft.

2. A ventilating system including a ventilating shaft having anintermediate portion pivoted between adjacent portions of said shaft, afanunitin the intermediate portion two sideplates connected by aperturedtop and bottom plates within which the adjacent portions of the shaftare secured and a stud shaft projecting inwardly from each side platetowards the intermediate portion of the ventilating shaft, for pivotallymounting the intermediate portion, one of said studs be:- ing hollow forthe passage therethrough of elec- '4 trio leads to the fan motor withinsaid intermediate portion.

3. A ventilating system comprising a ventilating shaft containing aventilating fan unit, wherein the fan unit is carried by a portion ofsaid shaft which is pivotally mounted between the adjacent portionsthereof about a central transverse axis so that said intermediateportion may be turned out of line with said adjacent portions to renderthe fan accessible, and turned through to reverse the direction of airflow produced by the fan if desired.

4. A ventilating system as claimed in claim 3 comprising lugs on theinterior of the intermediate portion for supporting the casing of anelectric motor for driving the fan.

5. A ventilating system including a ventilating shaft comprising anintermediate portion and aligned adjacent end portions, means formounting the intermediate portion between the end portions including twoside plates connected by top and bottom plates, each plate having acentral aperture within which said adjacent end portions are secured,means at right angles to the axis of the ventilating shaft for pivotallymounting the intermediate portion between the end portions, and aventilating fan unit supported by the intermediate portion, whereby theintermediate portion carrying the fan unit may be turned about an axisat right angles to the axis of the ventilating shaft.

6. A ventilating system as claimed in claim 5, wherein the means forpivotally mounting the intermediate portion consists of stud shaftsprojecting inwardly from each side plate toward the intermediate portionof the ventilating shaft, and a pair of external diametrically oppositetrunnions mounted on the said inwardly projecting stud shafts.

' THOMAS WYLIE.

REFERENCES CITED The following references are of record in the file ofthis patent:

